Finishing tool



June 1944- E. Al YMILLQNIG 2,350,794

FINISHING TOOL Filed D90. 7, 1942 ATTORNEYS,

Patented June 6, 1944 UNETED STATES PATENT v l I I I .2350394 L TOOL I Edward Ai'Mi'llonig; Daytomflhio' 7 I Application Decem er 7, 1942, SerialNo. 468,161 I 7 Claims. (01. 77- 735) This invention relates to. finishing tools particularly adapted for use in finishing metal parts. The tool of the invention has particular application to such operations as the removal of burrs, abraiding, :bufiing, reaming, drilling and similar operations.

' It is the principal object of the presentinvention to provide a tool ;of the class and for the purposes mentioned WlhlChfiS capable of performing operations of this nature on'sur-faces which are positioned at an angle to the direction "of the application of the tool. Ancillary to the foregoing object one of the purposes of the invention .is to provide a tool of the class described in which the working member which is adapted to engage with the work is designed for movement on an axis at an angle to the direction .of application vof the tool.

Another object of theinvention' is to provide atom of the class described comprising actuating bers which are to be provided with holes drilled therein, the drilling operation leaves burrs or roughnesses in the metal adjacent the inner ends of drilled holes on the inner wall of the sleeve.

The removal of the burrs or roughnesses at such locations interior of the metal sleeve part is often a most difli'cult operation due to the inaceessibility and inability to properly manipulate tools heretofore provided so as to accomplish the desired operation on the inside of a small metal sleeve or like part. The inner diameter of the part is often so small that the location of the burrs o-r roughnesses is inaccessible to tools here tofore provided, or the condition is such that the tool cannot be properly directed to the location desired even if the location is more or less accessible to the tool. Even if the roughened portion can be reached by the tool, the tool often cannot be directed properly was to accomplish the desired operation Without scratching theinner surface of the metal part or'jwithout undesirably enlarging the opening.

vision of a tool adapted particularly iior the removal of burrs or roughnesses in the metal adjacent the drilled holes on the inner wane: a

small metal sleeve lorlike part, and is desigfiedto 50 The present invention contemplates the pro- 'vofthe actuating member. actuatingm .fixed .to the .s'haft'upon which the position and forholding th @001 $10 tha 1th? a hole drilled radially through connection with tools heretofore provided f The tool of the presentinventiom in-itsein-l overcome the above mentioned bodi'ment herein disclosed, comprises guide means, and actuating means comprising ail abtu. ating member cooperable with said guide for sliding movement relative tl-ie'fe't'o, and a working means operable by said'actuating mini wber upon sliding movement of said mcmbr rela tive to said guideim'eans, The working means, in the embodiment herein a sc1jqsed, can? ss burr removing member l l nounted an the guide means to "rotate about an .axisat ans-1e, in this eltfit case perpendicular, to the direction bf movem f ber includes rack teeth cobpratihg a PiniQii berismounted. The guide mean which may be engaged by thefh v d orthe ator for manipulating the vtool into theQpr working member is in pr'QDer en agmflnt th the work. The actua ing mem er nclu es" dle means extendin exteriorly of the means and by which the actuating means he be moved by the hand of the operator so as to efiect i rotation of the working mem'beri I, I g I The working member iifs'of speial design adapt? ed particularly for the removal of the burrs :qr roughnesses in the metal. without magi-agate holes in a metal sleeve ior li'ke part with w en the tool is used and withoutscratching .or iiiarring the surface .of said part. I I I I other objects, advantagesand fea ur s of I16!!- elty will become apparent the descriptiph fi the nvention proceeds inconjunction with the a om nyin drawing in I Figure 1 is an eievatiorim view ofa tool chi-bonying the invention. I I I Figure 2 is a plan view of the same. c I I Figure 3 is an enlarged and elevatio ial vie of the same looking toward the working and showing the same in dbrativep the working end of the too-1 positions t metal sleeve and the. workingc riliimber opera ely engaged with the sleeve and iaxially aligned th vthe sleeves "said sleevebe'ing shown in section. I

Figure 4 is an end elevation of the working member comprising a part .ojf the toolof the invention. c Figure his a sectional view taken on theiline 5 '5ofFigurelL I 1' 7 ,v

New referring to 'th 'drawingjora detaneec 26.5 scription or the myenridn, the tea of the invention comprises guide means generally designated by the numeral I; actuating means comprising an actuating member generally designated by the numeral 2, and also comprising the pinion member 3; and working means which in 5 the present instance takes the form of a burr removing member 4.

The guide means I may be in the form of a hollow sleeve member as shown, havinga passage 5 of rectangularconfiguration extending therethrough. -The shank portion 8 of the actuating member 2 may have a corresponding rectangular configuration so that said shank portion 6 is slidingly receivable in the passage 5 of the guide means I, and the said shank portion 6 is adapted for sliding reciprocating motion within and longi- V tudinally of the passage 5. V H

Th working member 4 is rotatably mounted relative to the guide means I and for this purpose said working member 4 may be fixed to or formed H integrally with a pinion shaftl journalled in suitable openings 8 and 9 respectively provided in spaced bearing portions H1 and H of the guide member'fl. Thepinion 3 is fixedto the shaft 7 for rotation therewith, said pinion being posi- 2 tioned intermediate the spaced bearing portions 'Ill' and I l when the parts are operatively assembled,

a The actuating member is provided with ahandle Wand shank 6 of the actuating member is pro- 1 Vided with rack teeth IZ'meshin'g with the pinion ,srmrotation of the'pinion 3, pinion shaft 1, and working member 4', upon sliding movement of the shank portion 6 longitudinally of the passage 5'. The shank"=6 of the actuating member 2 may be provided with stop Or abutment means for limiting theextent of'movement of the actuating member 2 relative to the guide means I and for fp'reventing unauthorized removal of the actuating member from the passage'5. For this purpose thestop or abutment means may conveniently comprise the screws 13 and I4 threaded into the shank 6 as shown, said stop or abutment members l3 and 14 being adapted to abut with opposite ends of the guide sleeve'or housing I and said members l3 and [4 being spaced from one another a sufiicient distance to allow a movement of thefactuating member 2 relative to the guide {means I corresponding to that length of the shank 6 which is provided with the rack'teeth l2.

1' In the use 'of' the tool of the invention for'the purpose of removing burrs such as indicated at l5 from the inner wall It ofa metal sleeve part.

suehas n; the tool is inserted interiorly of the isleeve' H in] the manner indicated in Fig. 3 so that the tapered'orj pointed part 4a'ofthe working member 4 extends into one of the drilled holes I8 around the inner edge of which the burrs l5 occur. Withthe tool inserted in the" sleeve l'l Zandthe conical part 4a of the working member fheld firmly in the hole l8, as shown, the actuating member 2Vis caused to'be slidingly reciprocated relative'to theg'uide means I longitudinally of the passage 5," thereby rotating the working, member'4 through the interaction of the rack teeth l2 and pinion 3 so. that the cutting teeth llb of 'thewor'king member '4 cut ofijthe burrs 5., C l 'Reierring particularly tofEig. 4 attention is, directed to the'arrangement of the teeth 41) on .the tapered portion of 'the working member 4.

This tapere'dportion is of'generally conical con- 7 figurationand the teeth are arranged on two 01)- =posed sectors with two blank sectors 4c and 4d ihte'rmediate' the toothed sectors. The teeth "4b relieved and out only when the working member 'is rotated in one direction but do not out when the working member is rotated in the other I direction, whereby rotation of the working member in one direction performs only a light abrading action whereas when the working member is rotated in the other direction it performs a heavier cutting action.

It will be apparent that the construction of the tool of the invention is such that its working end may be inserted within a sleeve of very small diameter and so inserted in such a manner that the working member may be inserted in and positioned axially of a hole drilled radially through such sleeve, whereby the working member may operably move or rotate on an axis at an angle to or perpendicular to the axis along which the tool is inserted in the sleeve, and said working member may operably move or rotate on an axis at an angle to or perpendicular to the direction of movement of the actuating member.

In order to'properly accomplish the objective of removal of the burrs l5 occurring at the inner edges of the holes l8 without enlarging the hole more on one side than on another, or otherwise unevenly, it is important that the working member, such as the member 4, be capable of bein positioned axially of the hole 18, which is drilled radially through the sleeve l1, and the working member 4 is shown so positioned with respect to one of the holes IS, in Figure 3, with the working end .of the tool as a whole inserted within the sleeve Il axially of the latter.

Having thus described my invention, what I claim as. new and desire to secure by Letters Patent of the United States is:

1. A tool of. the class describedcomprising, in combination, a guide sleeve, a working member associated with said sleeve for working movement actuating means comprising an actuating member movable within said sleeve on an axis substantially coaxial with the axis of the sleeve, said axes being angularly disposed with respect to the axis of movement of the working member, said sleeve encompassing a substantial length of said actuating member, the working member extending from the sleeve in a direction laterally of the sleeve axis to a distance not exceeding the greatest dimension of the other elements of the tool in the same direction.

2. A tool of the class described comprising, in combination, a guide sleeve, a working member associated with said sleeve for working movement relativ thereto, actuating means for effecting working movement of said working member, 'said sleeve encompassing'a substantial length of said actuating member, said sleeve constituting hand engaging means adapted to be grasped "by the operators hand for supporting and guiding th tool in the operation thereof, and said actuating means including hand engaging means extending exteriorly of said sleeve, the working member extending from the sleeve in a direction laterally of the sleeve axis to a distance not exceeding the greatest dimension of the other elements of the tool in the same direction.

3. A tool of the class described comprising, in combination, a guide sleeve, a working member rotatably mounted on said sleeve, actuating means for rotating said working member, said actuating means comprising an actuating member reciprocable within said sleeve on an axis substantially coaxial withthe axis of the sleeve, said axes being angularly disposed with respect to the axis of movement of the working member, said sleeve encompassing a substantial length of said actuating member, said sleeve constituting hand engaging means adapted to be grasped by the operators hand for supporting and guiding the tool in the operation thereof, and said actuating means including hand engaging means extending exteriorly of said sleeve, the working member extending from the sleeve in a direction laterally of the sleeve axis to a distance not exceeding the greatest dimenison of the other elements of the tool in the same direction.

4. In a tool of the class described, a rotating working member having a substantially conical work engaging portion extending to a substantially pointed apex, said work engaging portion comprising a toothed sector and a smooth sector, said toothed sector having a plurality of teeth each progressively longer than its adjacent tooth, the longest tooth having its forward end extending substantially to said apex, the other teeth having their forward ends extending only to the smooth sector.

5. A tool as claimed in claim 4 wherein the forward ends of the other teeth extend progressively nearer to said apex in the order of their length from shortest to longest.

6. A tool as claimed in claim 4 wherein the smooth sector is relieved adjacent the forward ends of said other teeth.

'7. A tool of the class described comprising, in combination, a guide sleeve, a working member associated with said sleeve for working movement relative thereto, actuating means for effecting working movement of said working member, said actuating means comprising an actuating member movable within said sleeve on an axis substantially coaxial with the axis of the sleeve, said axes being angularly disposed with respect to the axis of movement of the working member, said sleeve encompassing a substantial length of said actuating member, the working member extending from the sleeve in a direction laterally of the sleeve axis to a distance not exceeding the greatest dimension of the other elements of the tool in the same direction, said working member having a substantially conical work engaging portion extending to a substantially pointed apex, said work engaging portion comprising a toothed sector and a smooth sector, said toothed sector having a plurality of teeth each progressively longer than its adjacent tooth, the longest tooth having its forward end extending substantially to said apex, the other teeth having their forward ends extending only to the smooth sector.

EDWARD A. MILLONIG. 

